Principality of Zhao in the context of "Sima Lun"

Sima Lun (traditional Chinese: 司馬倫; simplified Chinese: 司马伦; pinyin: Sīmǎ Lún; Wade–Giles: Ssu-ma Lun) (born before 250 – poisoned June 5, 301), courtesy name Ziyi (子彛), was titled the Prince of Zhao (趙王; 赵王; Zhào Wáng) and the usurper of the Jin dynasty from February 3 to May 31, 301. He is usually not counted in the list of Jin emperors due to his brief reign, and was often mentioned by historians as an usurper. He was the third of the eight princes commonly associated with the War of the Eight Princes.